const test = require('node:test');
const assert = require('node:assert/strict');

const { Reactor_PFR } = require('../../src/specificClass');
const { makeReactorConfig } = require('../helpers/factories');

test('Reactor_PFR derivative operators have expected dimensions and boundary rows', () => {
  const reactor = new Reactor_PFR(
    makeReactorConfig({
      reactor_type: 'PFR',
      length: 12,
      resolution_L: 6,
      volume: 60,
      n_inlets: 1,
    }),
  );

  assert.equal(reactor.D_op.length, reactor.n_x);
  assert.equal(reactor.D2_op.length, reactor.n_x);
  assert.equal(reactor.D_op.every((row) => row.length === reactor.n_x), true);
  assert.equal(reactor.D2_op.every((row) => row.length === reactor.n_x), true);

  assert.deepEqual(reactor.D_op[0], Array(reactor.n_x).fill(0));
  assert.deepEqual(reactor.D_op[reactor.n_x - 1], Array(reactor.n_x).fill(0));
  assert.deepEqual(reactor.D2_op[0], Array(reactor.n_x).fill(0));
  assert.deepEqual(reactor.D2_op[reactor.n_x - 1], Array(reactor.n_x).fill(0));
});